[Octave-bug-tracker] [bug #31692] 'error' function behaves different from MATLAB, causing program to stop

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?31692>

                 Summary: 'error' function behaves different from MATLAB,
causing program to stop
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Thu 18 Nov 2010 10:44:38 AM UTC
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Feature Request
                  Status: None
             Assigned to: None
         Originator Name: Daniel
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.2.2
        Operating System: Microsoft Windows

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Details:

According to the MATLAB documentation, the function 'error' will not
interfere with the program if called with an empty argument:

http://www.mathworks.com/help/techdoc/ref/error.html

"...empty...no effect...no action is taken..."

This allows constructions like 


error(nargchk(2,3,nargin))


instead of


if (nargchk(2,3,nargin)), error(nargchk(2,3,nargin)), end


where nargchk() produces a string "too many", "too few" or an empty string if
the number of input arguments is valid.

Would it be possible to have Octave's error() function behave in the same
way, i.e. ignoring empty arguments?




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